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Snellen vs. LogMAR: Why a 164-Year-Old Eye Chart Is No Longer Enough

Snellen vs. LogMAR: Why a 164-Year-Old Eye Chart Is No Longer Enough

Compare conventional Snellen and standardized logMAR/ETDRS testing, including clinical evidence on chart differences, letter-by-letter scoring, repeatability, research reporting and visual acuity documentation. ...
BCVA and LCVA Testing: Why ETDRS Cabinet Illumination Matters

BCVA and LCVA Testing: Why ETDRS Cabinet Illumination Matters

Explore why consistent ETDRS cabinet illumination matters for BCVA and LCVA testing, and how fixed, adjustable and self-calibrating Good-Lite viewers support different clinical and research...
ANDI Brings Evidence-Based Amblyopia Guidance to the Point of Care

ANDI Brings Evidence-Based Amblyopia Guidance to the Point of Care

PEDIGโ€™s ANDI tool turns a large body of amblyopia research into practical point-of-care guidance. Its workflow also reinforces a basic principle of pediatric eye care:...
How to Document Visual Acuity and Snellen Chart Results

How to Document Visual Acuity and Snellen Chart Results

A practical guide to documenting visual acuity, from Snellen and logMAR notation to correction status, pinhole results, near vision measurements, and pediatric screening. Includes clinical...
Contrast Sensitivity Testing: When 20/20 Isn't Enough

Contrast Sensitivity Testing: When 20/20 Isn't Enough

A patient can read the 20/20 line perfectly and still struggle with night driving, face recognition, and stair navigation. This article provides a practical clinical...